<http://schema.org/availability>
"http://schema.org/InStock"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.pfister.ch/de/produktdetail/7466122/Katalog/K%C3%BCchenzubeh%C3%B6r/Backen-%26-Gratinieren/Schale-Hot-Pot-Set>